Review
Daily Quadruple!!! What is the combination of all forces acting on an object?
Net Force
True or False? When objects collide, energy is transferred from one object to another.
True
What type of energy transformation occurs when using a plug in fan?
Electrical --> Mechanical
Forces that cause a change in motion are balanced or unbalanced?
Unbalanced Forces
The ability to do work or cause change is known as _______.
Energy
If forces are unbalanced, objects will be?
In motion, stationary, or destroyed
In motion
True or False? Energy can be created and destroyed.
FALSE
This force keeps your feet from slipping when you walk
What is friciton?
Why do you slide farther on a wet floor than a dry one?
What is less friction?
A stretched rubber band is released and snaps forward. Explain the energy transformation.
What is potential energy changing into kinetic energy?
What type of energy transformation occurs with an electric radio?
Electrical --> Sound
True or False? Potential energy is the energy of motion.
False
Daily Double!! What type of energy transformation occurs when a rollerblader climbs to the top of a hill and stops?
Kinetic --> Potential
If you are running at a constant speed, are forces balanced or unbalanced?
What are balanced forces?
If distance stays the same but time increases, what happens to speed?
What is speed decreases?
If two lines are on a graph and one is steeper, what does that mean?
What is the object is moving faster?
True or False? Radiant energy is another name for light energy.
True
If time increases but distance does not change, the object is
What is not moving?
If a line becomes steeper on a distance-time graph, what is happening?
What is speed is increasing?
The higher an object is, the more of this it has.
What is potential energy?
If a line goes DOWN on a distance-time graph, what does it mean?
What is the object is moving back toward the starting point?
As a roller coaster goes down, what happens to its energy?
What is potential energy changes to kinetic energy?
Actually worth 2,000 points! A graph shows a straight, slanted line. At the same time, the object is moving. What can you say about its motion AND energy?
What is the object is moving at a constant speed and has kinetic energy?
If the line on a distance-time graph is flat (horizontal), what is happening?
What is no movement (object is stopped)?
Daily Double!! If the line on a distance-time graph is straight and slanted upward, what is happening?
What is constant speed?